Does the new xcode crash due to running out of memory? - xcode4.5

Question

I recently often get this:
Process: Xcode [30248]
Path: /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier: com.apple.dt.Xcode
Version: 4.5 (1839)
Build Info: IDEApplication-1839000000000000~3
App Item ID: 497799835
App External ID: 10747437
Code Type: X86-64 (Native)
Parent Process: launchd [140]
User ID: 501
Date/Time: 2012-10-09 10:32:37.454 +0700
OS Version: Mac OS X 10.8.2 (12C60)
Report Version: 10
Interval Since Last Report: 136816 sec
Crashes Since Last Report: 2
Per-App Interval Since Last Report: 134365 sec
Per-App Crashes Since Last Report: 1
Anonymous UUID: 1CBC3344-3A0F-4006-F51E-8FF9902D7CC5
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
ProductBuildVersion: 4G182
UNCAUGHT EXCEPTION (NSMallocException): Out of memory. We suggest restarting the application. If you have an unsaved document, create a backup copy in Finder, then try to save.
UserInfo: (null)
Hints: None
Backtrace:
0 0x00007fff93d7308e __exceptionPreprocess (in CoreFoundation)
1 0x00007fff96bd13f0 objc_exception_throw (in libobjc.A.dylib)
2 0x00007fff8b3ff914 ___NSInitializePlatform_block_invoke_0 (in Foundation)
3 0x00007fff93ce7fe0 __CFStringChangeSizeMultiple (in CoreFoundation)
4 0x00007fff93d0d722 CFStringReplaceAll (in CoreFoundation)
5 0x00007fff93d0bd55 _CFBundleTryOnePreferredLprojNameInDirectory (in CoreFoundation)
6 0x00007fff93d0b3a0 _CFBundleAddPreferredLprojNamesInDirectory (in CoreFoundation)
7 0x00007fff93d0ba7e _CFBundleGetLanguageSearchList (in CoreFoundation)
8 0x00007fff93dbcf99 _CFBundleCreateQueryTableAtPath (in CoreFoundation)
9 0x00007fff93db9817 _CFBundleCopyQueryTable (in CoreFoundation)
10 0x00007fff93dbdeb9 _CFBundleCopyURLsOfKey (in CoreFoundation)
11 0x00007fff93dbb3ad _CFBundleCopyFindResources (in CoreFoundation)
12 0x00007fff93d1b757 CFBundleCopyResourceURL (in CoreFoundation)
13 0x00007fff907b4165 MTUOpenResourceFile (in SpeechSynthesis)
14 0x00007fff907b40a7 MTUReadResourceDataFile (in SpeechSynthesis)
15 0x00007fff907b3c1f ReadVoiceDescriptionFileFromBundle(__CFBundle*, VoiceDescription*) (in SpeechSynthesis)
16 0x00007fff907b3a41 RegisterVoiceBundle(VoiceListRec**, SpeechEngine*, __CFBundle*, int) (in SpeechSynthesis)
17 0x00007fff907b392f RegisterVoices(int, SpeechEngine*, VoiceListRec**) (in SpeechSynthesis)
18 0x00007fff907b355f RebuildVoiceList(SpeechEngine*, VoiceListRec**) (in SpeechSynthesis)
19 0x00007fff907afd4d RebuildVoiceListIfNecessary() (in SpeechSynthesis)
20 0x00007fff907b01e6 NewSpeechChannel (in SpeechSynthesis)
21 0x00007fff907b9e99 StartSpeakingNow (in SpeechSynthesis)
22 0x00007fff93d2fda4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ (in CoreFoundation)
23 0x00007fff93d2f8bd __CFRunLoopDoTimer (in CoreFoundation)
24 0x00007fff93d15099 __CFRunLoopRun (in CoreFoundation)
25 0x00007fff93d146b2 CFRunLoopRunSpecific (in CoreFoundation)
26 0x00007fff924640a4 RunCurrentEventLoopInMode (in HIToolbox)
27 0x00007fff92463e42 ReceiveNextEventCommon (in HIToolbox)
28 0x00007fff92463cd3 BlockUntilNextEventMatchingListInMode (in HIToolbox)
29 0x00007fff94ea4613 _DPSNextEvent (in AppKit)
30 0x00007fff94ea3ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in AppKit)
31 0x00007fff94e9b283 -[NSApplication run] (in AppKit)
32 0x00007fff94e3fcb6 NSApplicationMain (in AppKit)
33 0x000000010080bd17 (in Xcode)
34 0x000000010080bca8 (in Xcode)
The amount of memory is abundant. 8GB and there are still plenty left. Not to mention virtual memory. I am not sure if I should ask this to superuser.
The xcode version is Version 4.5 (4G182)
Did I set things up incorrectly or is this just a bug in xcode 4.5?
Should this be asked at superuser.com instead (but most of the crowd there probably do not use xcode).
Quite often when I change tabs, xcode will slow down.